Well, if Tanner is the one insisting on keeping some of the old coaching staff to save money, that explains a lot about why a head coach with experience AS a head coach was not on the top of their list.
As the new head coach, Beamer should be about complete change, top to bottom, to reset everything: culture, expectations, approach, etc. The abilities, etc. of any of the existing coaches should not even be a consideration. They carry the stink, goodbye.
That he is not doing that is not a good sign on many levels, IMO.